package cn.yqx.bankshop.remote;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.StringUtils;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;

@Slf4j
public class RequestUtil {
    public static final String DEF_CHATSET = "utf-8";
    public static final int DEF_CONN_TIMEOUT = 30000;
    public static final int DEF_READ_TIMEOUT = 30000;
    public static final String HTTP_GET = "GET" ;
    public static final String HTTP_POST = "POST" ;
    public static final String CHARSET_UTF8 = "UTF-8" ;
    public static final String USERAGENT = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";

    public static String net(String strUrl, Map<String, Object> params, String method) throws Exception {
        HttpURLConnection conn = null;
        BufferedReader reader = null;
        String rs = "{}";
        try {
            StringBuffer sb = new StringBuffer();
            if (method == null || method.equals(HTTP_GET)) {
                strUrl = strUrl + "?" + urlencode1(params);
            }
            URL url = new URL(strUrl);
            conn = (HttpURLConnection) url.openConnection();
            if (method == null || method.equals(HTTP_GET)) {
                conn.setRequestMethod("GET");
            } else {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
            }
            conn.setRequestProperty("User-agent", USERAGENT);
            conn.setUseCaches(false);
            conn.setConnectTimeout(DEF_CONN_TIMEOUT);
            conn.setReadTimeout(DEF_READ_TIMEOUT);
            conn.setRequestProperty("Content-type", "application/json;charset=UTF-8");

            conn.setInstanceFollowRedirects(false);
            conn.connect();


            if (params != null && method.equals(HTTP_POST)) {
                try {
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    String str = urlencode(params) ;

                    out.write(str.getBytes(CHARSET_UTF8));
                } catch (Exception e) {
                    log.info("RequestUtil error : {} " , e );
                }
            }

            InputStream is = conn.getInputStream();
            reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
            String strRead = null;

            while ((strRead = reader.readLine()) != null) {
                sb.append(strRead);
            }
            rs = StringUtils.isEmpty(sb.toString() )?"{}": sb.toString() ;
        } catch (IOException e) {
            log.error("RequestUtil error : {} "  , e);
        }  catch ( Exception e) {
            log.error("RequestUtil error : {} "  , e);
        }finally {
            if (reader != null) {
                reader.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }
        return rs;
    }

    public static String netkx(String strUrl, Map params, String method) throws Exception {
        HttpURLConnection conn = null;
        BufferedReader reader = null;
        String rs = null;
        try {
            StringBuffer sb = new StringBuffer();
            if (method == null || method.equals("GET")) {
                strUrl = strUrl + "?" + urlencode(params);
            }
            URL url = new URL(strUrl);
            conn = (HttpURLConnection) url.openConnection();
            if (method == null || method.equals("GET")) {
                conn.setRequestMethod("GET");
            } else {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
            }
            conn.setRequestProperty("User-agent", USERAGENT);
            conn.setUseCaches(false);
            conn.setConnectTimeout(DEF_CONN_TIMEOUT);
            conn.setReadTimeout(DEF_READ_TIMEOUT);
            conn.setInstanceFollowRedirects(false);
            conn.connect();
            if (params != null && method.equals("POST")) {
                try {
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    out.writeBytes(urlencodekx(params));
                } catch (Exception e) {
                    // TODO: handle exception
                }
            }
            InputStream is = conn.getInputStream();
            reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
            String strRead = null;
            while ((strRead = reader.readLine()) != null) {
                sb.append(strRead);
            }
            rs = sb.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }
        return rs;
    }

    public static String netWwwForm(String strUrl, Map<String, Object> params, String method) throws Exception {
        HttpURLConnection conn = null;
        BufferedReader reader = null;
        String rs = "{}";
        try {
            StringBuffer sb = new StringBuffer();
            if (method == null || method.equals(HTTP_GET)) {
                strUrl = strUrl + "?" + urlencode1(params);
            }
            URL url = new URL(strUrl);
            conn = (HttpURLConnection) url.openConnection();
            if (method == null || method.equals(HTTP_GET)) {
                conn.setRequestMethod("GET");
            } else {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
            }
            conn.setRequestProperty("User-agent", USERAGENT);
            conn.setUseCaches(false);
            conn.setConnectTimeout(DEF_CONN_TIMEOUT);
            conn.setReadTimeout(DEF_READ_TIMEOUT);
            conn.setRequestProperty("Content-type", "application/x-www-form-urlencoded;charset=utf-8");

            conn.setInstanceFollowRedirects(false);
            conn.connect();


            if (params != null && method.equals(HTTP_POST)) {
                try {
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    String str = urlencode1(params) ;

                    out.write(str.getBytes(CHARSET_UTF8));
                } catch (Exception e) {
                    log.info("RequestUtil error : {} " , e );
                }
            }

            InputStream is = conn.getInputStream();
            reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
            String strRead = null;

            while ((strRead = reader.readLine()) != null) {
                sb.append(strRead);
            }
            rs = StringUtils.isEmpty(sb.toString() )?"{}": sb.toString() ;
        } catch (IOException e) {
            log.error("RequestUtil error : {} "  , e);
        }  catch ( Exception e) {
            log.error("RequestUtil error : {} "  , e);
        }finally {
            if (reader != null) {
                reader.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }
        return rs;
    }

    public static String netJson(String strUrl, Map<String, Object> params, String method, Map<String, String> header) throws Exception {
        HttpURLConnection conn = null;
        BufferedReader reader = null;
        String rs = null;
        try {
            StringBuffer sb = new StringBuffer();
            if (method == null || method.equals(HTTP_GET)) {
                strUrl = strUrl + "?" + urlencode1(params);
            }
            URL url = new URL(strUrl);
            conn = (HttpURLConnection) url.openConnection();
            if (method == null || method.equals(HTTP_GET)) {
                conn.setRequestMethod("GET");
            } else {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
            }

            if( header != null) {
                for(Map.Entry<String, String> entry : header.entrySet()){
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }

            conn.setRequestProperty("User-agent", USERAGENT);
            conn.setUseCaches(false);
            conn.setConnectTimeout(DEF_CONN_TIMEOUT);
            conn.setReadTimeout(DEF_READ_TIMEOUT);
            conn.setRequestProperty("Content-type", "application/json;charset=UTF-8");
            conn.setInstanceFollowRedirects(false);
            conn.connect();


            if (params != null && method.equals(HTTP_POST)) {
                try {
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    String str = urlencode(params) ;
                    System.out.println(str);
                    out.write(str.getBytes(CHARSET_UTF8));

                } catch (Exception e) {
                    log.info("RequestUtil error : {} " , e );
                }
            }
            if(conn.getResponseCode() == 200) {
                InputStream is = conn.getInputStream();
                reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
                String strRead = null;

                while ((strRead = reader.readLine()) != null) {
                    sb.append(strRead);
                }
                rs = sb.toString();

                log.info("response message is : {} " , rs);

            }else {
                log.info("request error code is : {} ,http url : " ,conn.getResponseCode() , conn.getURL());
            }

        } catch (IOException e) {
            log.error("RequestUtil error : {} "  , e);
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }
        return rs;
    }
    public static String net(String strUrl, Map<String, Object> params, String method, Map<String, String> header) throws Exception {
        HttpURLConnection conn = null;
        BufferedReader reader = null;
        String rs = "{}";
        try {
            StringBuffer sb = new StringBuffer();
            if (method == null || method.equals(HTTP_GET)) {
                strUrl = strUrl + "?" + urlencode1(params);
            }
            URL url = new URL(strUrl);
            conn = (HttpURLConnection) url.openConnection();
            if (method == null || method.equals(HTTP_GET)) {
                conn.setRequestMethod("GET");
            } else {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
            }

            if( header != null) {
                for(Map.Entry<String, String> entry : header.entrySet()){
                    conn.setRequestProperty(entry.getKey(), entry.getValue());
                }
            }

            conn.setRequestProperty("User-agent", USERAGENT);
            conn.setUseCaches(false);
            conn.setConnectTimeout(DEF_CONN_TIMEOUT);
            conn.setReadTimeout(DEF_READ_TIMEOUT);
            conn.setRequestProperty("Content-type", "application/json;charset=UTF-8");
            conn.setInstanceFollowRedirects(false);
            conn.connect();


            if (params != null && method.equals(HTTP_POST)) {
                try {
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    String str = urlencode(params) ;
                    System.out.println(str);
                    out.write(str.getBytes(CHARSET_UTF8));

                } catch (Exception e) {
                    log.info("RequestUtil error : {} " , e );
                }
            }
            if(conn.getResponseCode() == 200) {
                InputStream is = conn.getInputStream();
                reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
                String strRead = null;

                while ((strRead = reader.readLine()) != null) {
                    sb.append(strRead);
                }
                rs = sb.toString();

                log.info("response message is : {} " , rs);

            }else {
                log.info("request error code is : {} ,http url : " ,conn.getResponseCode() , conn.getURL());
            }

        } catch (IOException e) {
            log.error("RequestUtil error : {} "  , e);
        } finally {
            if (reader != null) {
                reader.close();
            }
            if (conn != null) {
                conn.disconnect();
            }
        }
        return rs;
    }


    public static String urlencode(Map<String, Object> params) {
        return JSON.toJSONString(params);
    }
    public static String urlencodekx(Map<String, Object> data) {
        StringBuilder sb = new StringBuilder();
        for (Map.Entry i : data.entrySet()) {
            try {
                sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }
    public static String urlencode1(Map<String, Object> params){
        StringBuilder sb = new StringBuilder();

        int index = 0 ;
        for (Map.Entry<String, Object> i : params.entrySet()) {

            if( index == params.entrySet().size() -1 ) {
                sb.append(i.getKey()).append("=").append(i.getValue());
            }else {
                sb.append(i.getKey()).append("=").append(i.getValue()).append("&");
            }

            index++;
        }


        return sb.toString();
    }

    public static void main(String[] args) {
        String x = "{}" ;
        JSONObject json = JSONObject.parseObject(x) ;
        System.out.println(json.get("errorcode"));
    }
}
